KR100204962B1 - Collision warning device and method thereof - Google Patents

Abstract

The present invention relates to an apparatus for extending the life of a crash alarm apparatus and a method thereof, and more particularly, to an apparatus and method for extending life of a crash alarm apparatus, comprising: vehicle running state detecting means for detecting a signal varying according to a running state of the vehicle and outputting the signal as a corresponding electric signal; Wherein the control unit is configured to determine whether or not the vehicle is in the course of a curve over a predetermined angle by receiving a signal output from the vehicle running state detecting unit, A control means for outputting a signal to the control means; And a drive means for shutting off the power supplied to the vehicle collision alerting apparatus by a signal outputted from the control means. The control means judges the running state of the vehicle at the time of rainy or curved road, It is possible to reduce the cost and extend the service life of the vehicle crash alarm device by preventing the malfunction caused in rainy weather and by extending the service life of the laser diode having a high price and a limited lifetime, There is an effect that can be improved.

Description

Apparatus and method for extending the life of a vehicle crash alarm device

The present invention relates to an apparatus for extending the service life of a vehicle collision alerting apparatus and a method thereof, and more particularly, to a vehicle collision alerting apparatus for extending the service life of a collision alerting apparatus, An extension device and a method thereof.

Generally, since the speed of the vehicle travels at low speed in the city driving, it travels without maintaining the safety distance to the front car, and causes large or small contact or collision due to the operation of the emergency brake of the front car.

In addition, in the case of highway speeds and highway speeds, and the lack of vehicle distance or the inability to avoid obstacles in front of the driving vehicle due to driving carelessness, many lives are lost on roads that should be conveniently used in large traffic accidents There are so many.

Therefore, many techniques have been researched and developed in order to prevent large and small contact accidents and heavy traffic accidents in the above-mentioned general roads and highways.

One of them is a vehicle collision alarm apparatus which measures a distance between a traveling vehicle and a front vehicle by means of a laser beam emitted from a laser diode and, when the distance measured from the front vehicle is within a safe distance, The driver has to reduce the speed to maintain the safe distance to the front car, so that it is possible to reduce many traffic accidents by preventing large and small contact accidents and major accidents in advance.

However, in the case of a straight road, the collision warning system is used without any problem due to the linearity characteristic of the laser beam. However, when traveling along a curve, the laser beam transmitted and reflected by the transmitted laser beam is changed in angle, There is a problem that frequent collision alarms are emitted from the vehicle. In case of rainy weather, the laser beam for measuring the distance to the vehicle ahead is reflected by raindrops and eyes, and reliability is deteriorated due to malfunction of the apparatus.

Also, as described above, when the vehicle is running on a curve road, a power source is supplied to the vehicle collision alerting device in a state where the vehicle can not be accurately measured with respect to the vehicle ahead and a malfunction due to snow or rain. Thereby shortening the lifetime of the battery.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a collision warning control apparatus for a vehicle, which detects a rainy or curved road traveling state and cuts off a power supplied to a vehicle crash alarm device to prevent malfunctions occurring during rainy weather, Thereby preventing unnecessary driving and extending the service life of the vehicle crash alarm system.

According to an aspect of the present invention, there is provided a vehicular drive system comprising: vehicle running condition detecting means for detecting a signal varying according to a running state of a vehicle and outputting the signal as a corresponding electric signal; Wherein the control unit is configured to determine whether the vehicle is traveling in a curved path longer than a predetermined angle by receiving a signal detected by the vehicle running state detecting unit, A collision warning control means for outputting a signal to the collision warning means; And a drive means for interrupting a power supplied to the vehicle collision alerting apparatus by a signal output from the collision warning control means.

According to another aspect of the present invention, there is provided a method of driving a vehicle, comprising: reading a curve road running state and a wiper operation state when the vehicle starts traveling; Reading whether the vehicle is traveling on a curve road; And stopping the power supplied to the vehicle collision alerting device when the vehicle is traveling on a curve road having a predetermined angle or more.

FIG. 1 is a block diagram of an apparatus for extending the life of a vehicle crash alarm system of the present invention. FIG.

Figure 2 is a flow chart of a method for extending the life of a vehicle crash alarm system of the present invention.

FIG. 3a is a detailed view of the rotation angle sensor of the steering wheel used in the present invention.

3b is an output angle of the steering wheel according to the rotation of the steering wheel used in the present invention.

DESCRIPTION OF THE REFERENCE NUMERALS

10: Vehicle traveling state detecting means 11: Steering wheel detecting section

12: wiper drive state detection unit 20: crash warning control means

30: Driving means

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a block diagram of an apparatus for extending the life span of a vehicle collision alerting apparatus according to the present invention. The vehicle running state detecting means 10 detects a signal varying according to the running state of the vehicle and outputs the signal as a corresponding electric signal. A collision warning control means (20) for controlling the running signal detected by the state detecting means (10) by a predetermined program and outputting a controlled signal, and a control means And driving means (30) for sending and cutting off the laser beam when turned on and off.

The vehicle running condition detecting means (10) includes a steering wheel detecting portion (11) for detecting a turning angle of the steering wheel changing the direction of the vehicle according to an operation state of a driver and outputting a corresponding electric signal; And a wiper drive state detector (12) for detecting a wiper drive state operated by an operation of the driver when the snow and the rain come down and outputting a corresponding electric signal.

The steering wheel detection unit 11 is mounted on the shaft of the steering wheel with an angle sensor 300, which is a non-contact type potentiometer, as shown in FIG.

The angle sensor 300 includes magnetoresistive elements 301 and 302 having a property of increasing the electric resistance when a magnetic field is applied thereto and are arranged and fixed in series with each other. 3B, the permanent magnet 303 is rotated by the rotation of the magnetoresistive element 301 (302) when the steering wheel rotates, as shown in FIG. 3B, So that the rotation angle can be detected by changing the output voltage.

Here, terminals 1 and 3 are input voltage terminals, and terminals 1 and 2 are output voltage terminals.

FIG. 2 is a flowchart of a method for extending the service life of a vehicle crash alarm apparatus of the present invention, comprising the steps of: (S100) reading a curve road running state and a wiper operating state when the vehicle starts traveling; A step (S110) of reading whether the vehicle is running on a curve road in the step (S100); (S111) of reading the wiper driving state if the vehicle is not traveling along the curve length in the step S110; and a step S111 of reading the wiper driving state if the vehicle is not traveling on the curve length. In the steps S110 and S111, (Step S111), and when the wiper is continuously driven (step S111), powering off the collision alerting apparatus (step S120).

Hereinafter, the operation of the present invention will be described.

When the vehicle starts to run, the power source is applied to the vehicle collision alarm device so that the collision warning control means 20 goes to step S100 to detect the steering wheel detection unit 11 and the wiper drive state detection unit 11 from the vehicle running state detection unit 10. [ The steering wheel detecting unit 11 senses whether the steering wheel is traveling on the curve or the degree of the curve of the steering wheel of the vehicle. As shown in FIG. 3B, The permanent magnet 303 of the angle sensor 300 rotating together with the steering wheel changes the magnetic field to the magnetoresistive elements 301 and 302 according to the rotation state of the steering wheel, And the output voltage is calculated by the predetermined program preset in the crash warning control means 20 so that the state of the curve on the curve of the turning state of the steering wheel The row status is read.

On the other hand, the wiper driving state detection detects the low, high, and interval states of the wiper operation switch mounted on the steering wheel that operates the wiper, and reads the current rain or snow state.

As described above, the turning angle of the steering wheel detected by the steering wheel detecting unit 11 and the wiper driving state detecting unit 12 of the vehicle running state detecting unit 10, or the wiper driving signal, The collision warning control means 20 proceeds to step S110 to determine whether or not the vehicle is running on the curve road. At this time, the running state of the curve road is detected by the steering wheel detecting unit 11 When the rotational angle of the steering wheel to be sensed is arbitrarily set to a rotational angle which is outside the range of the rotational angle at which the laser beam of the drive means 30 is emitted and the emitted laser beam is reflected and received, The collision warning control means 20 determines that the steering angle is a curve length, but if the steering angle of the steering wheel is not more than a predetermined rotation angle, It is judged that the road is not a severe road.

Therefore, if the steering angle of the steering wheel is not equal to or higher than a predetermined rotation angle, that is, if the steering wheel is not in a curve road traveling state where the bending is severe, the collision warning control means 20 determines whether the vehicle is in the wiper driving state in step S11, If it is determined that the vehicle is not in the wiper driving state, the collision warning control means 20 determines that the vehicle is traveling along a curved road or a road other than the snowy or rainy road, and repeats the operation from step S100 .

If it is determined in step S110 that the steering angle detected by the steering wheel detection unit 11 of the vehicle running state detection unit 20 is greater than a predetermined rotation angle, It is determined that the curved road is running on a curved road with a large curvature. Then, the process goes to step S120 to cut off power to the driving unit 30 so that the driving unit 30 is not driven, Prevent the beam from being transmitted.

If it is determined in step S110 that the rotational angle of the steering wheel detected by the steering wheel detecting unit 11 of the vehicle running state detecting unit 10 is not detected to be greater than the predetermined rotational angle, the process proceeds to step S111, If it is determined that the wiper is being driven through the detection unit 12, the collision warning control unit 20 determines that the current snow or rain is present, and then proceeds to step S120 to cut off the power to the drive unit 30 The drive means 30 is not driven so that the laser diode is not driven unnecessarily, thereby preventing the laser beam from being transmitted.

As described above, according to the present invention, when it is determined that the vehicle is traveling on a curve road driving or snowing or rain driving through a steering wheel detecting part and a wiper driving state detecting part when the vehicle is traveling, By turning off the power supply, it is possible to extend the lifetime of the laser diode which generates an expensive laser beam with a limited lifetime by preventing the occurrence of a malfunctioning collision alarm and an unnecessary operation during a curved road, an eye, It is possible to extend the lifetime of the apparatus and improve the reliability.

Claims (4)

Vehicle running state detecting means for detecting a signal varying according to a running state of the vehicle and outputting the signal as a corresponding electric signal; Wherein the control unit is configured to determine whether or not the vehicle is in the course of a curve over a predetermined angle by receiving a signal output from the vehicle running state detecting unit, A collision warning control means for outputting a signal to the collision warning means; And a drive means for interrupting power supplied to the vehicle collision alerting apparatus by a signal output from the collision warning control means. The steering control apparatus according to claim 1, wherein the vehicle running state detecting means comprises: a steering wheel detecting unit for detecting a rotation angle of the steering wheel for changing a direction of the vehicle according to an operation state of a driver and outputting a corresponding electric signal; And a wiper drive state detector for detecting a wiper drive state operated by an operation of the driver when the snow and rain are falling and outputting a corresponding electric signal. Reading a curve road running state and a wiper operating state when the vehicle starts traveling; Reading whether the vehicle is traveling on a curve road; And outputting a signal for shutting off the power supplied to the vehicle collision alerting apparatus when the vehicle is traveling on a curve road having a predetermined angle or more in the step . 4. The method of claim 3, further comprising: determining a driving state of the wiper when the vehicle travels on the curved road is not greater than a predetermined angle; And outputting a signal for shutting off the power supplied to the vehicle collision warning apparatus when the wiper is driven by the driver due to snow or rain in the step.